Electric lock.



S. B. HESS.

ELECTRIC LOCK.

APPLICATION FILED FEB. 9. 1917.

Patented Apr. 3, 1917.

INVENTOR To all whom it may concern:

. Be it known that I, SIMON B'. Hess, a citientree.

sIMon 2B. nnss, or NEW YORK, n. Y.

ELEGTBIC LOCK.

Original application filed .Tune 3, 1915, Serial No. 31,831.

' 1917. Serial No.147,665.

zen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Electric Locks, of which the following is a specification.

This invention relates primarily to burglar alarm systems of the class employed for the protection of localized risks, such for example, as bank vaults, stores, lofts, buildings or apartments in residential districts.

Various systems of this class are at pres ent in use, in which means are provided whereby an alarm will be started in opera tion upon interference with the protected structure. In such systems the alarm device is usually provided with some sort of covering which may be connected tothe protective circuit. In spite of this covering, and

in spite of the fact that the alarm is ener-v gized upon interference with the covering, it may be possible for a house breaker to remove the covering and disable the alarm itself after it has operated for only a short time, taking the chance that he will not be disturbed during the few minutes necessary for the removal of the covering.

Itis an object of this invention to provide an alarm system which will include novel means whereby it will be impossible to remove the protecting housing of an alarm sufliciently to stop the signal or interfere therewith, after the alarm has been set.

Another object of this invention is to provide novel holding or fastening means for the outer casing of the alarm housing which is included in the protective circuit, so that the housing is adaptable of prompt and convenient removal.

The accompanying drawing is a diagrammatic view showing this invention as applied to the protecting housing of an alarm connected with a system such as that shown in my copending application filed June 3, 1915, Serial No. 31,831, of which this application is a division.

In the diagram, the wires 11 and 12 and their continuations constitute the protective circuit and are connected to any suitable source of power such as the generator 13, these wires 11 and 12 being connected to the guarded structure, and passing through the protecting housing of the alarm. The pro- Specification of Letters Patent.

Patented Apr. 3, 19M.

Divided and this application filed February 9,

tected signal housing comprises substantially a protected box B in which a signal receiving device or audible alarm is located. The box B usually embraces a base member 14, on which the audible alarm such as the gong, 15 islocated. For inclosing the gong there is provided an inner casing 16 adapted to be secured to one side of said base member, preferably leaving 'a border 17 of said base memberlt free around said lnner casing 16. To inclose such casing 16, and secured to said base member, there is provided an outer casin 18, so that before the inner casing in which the ong is located can be opened or destroyecI, the outer casing 18 must first be opened.

" In practice I find it desirable to place the box B on the outside wall of a protected structure, and connect the circuit wires of the system between the circuit controlling mechanism and the box I? through a section of the usual electric conduit (not shown).

The wiring is as follows The main wire 11, beginning at the generator 13, after passing through the guarded structure, passes through the wall and then through the opening 24 in the border 17 of the base member 14 to the jack arm 25 which is spaced apart from the jack arm 26 to recelve a plug, and disposed on one side of the casing 16, the wire 11 connecting the jack arm 26 with the jack arm 27 on the other side of the casing 16, which jack arm 27 is spaced fromthe jack arm 28 to receive a second plug, the jack arm 28 being connected by" a wire 11 which passes out through the opening 29 in the border 17 of the base member 14: disposed on the same side of the casing 16 as the jack arms 27 and 28 are disposed, .and thereupon through the wall to the relay R.

The main wire 12, also beginning with the 1 generator 13, after passing through the guarded structure, passes through the wall parallel with the wire 11 and then through the opening 24 to the jack arm 25' adjacent to the jack arm 25, the jack arm 25' being spaced apart from the Jack arm 26 disposed adjacent to the jack arm 26, the wire 12' extending parallel to the wire 11' and connecting the jack arm 26 with the jack arm 27 disposed adjacent to the jack arm 27 which jack arm 27 is spaced apart from the jack arm 28' disposed adjacent to the jack arm 28. Connected to the jack arm 28', there is j are disposed. to co6perate with the ack provided a 'wire 12 which extends parallel to thewire' 11 and .connects with the relay R. The aforementioned wires 11 and 12 with their continuations when properly coninside of the casing 18, there are provided two conductiveplugs and 36 properly in-' sulated from the casing 18 and each having an'insulated portion 37 in its body portion to form two contacts. .The plugs 35 and 36 arms on the base member 14, the arrangement being such that when the casing 18 is in closed pdsition, the plugs will engage the four arms of the jacks so that the wire 11 will permit the passage of current from the wire 11 to .the wire 11, and the wire 12 will permit the passage of current from the wire 12. In each plug there are provided two pairs of recesses 49 and 50, the recesses 49 being disposed on one side of the insulated portion 37 and the recesses 50 on the other side of such insulated portion, the recesses of each pair being disposed on opposite sides of the plug so as to form an anchor into which a pair of jack arms may engage. From the arrangement of these plugs, it Wlll be seen that when it is attempted to get at the gong, the outer member mustv first be removed, which will immediately break the circuit, cutting off the current to the relay R, and the main cover member Wlll still be.

There is a circuit provided for energizing the. audible alarm and which when connected will prevent the formation of a connection whereby the locking means for the inner casing 16 can be unlocked.

The circuit for energizing the audible alarm 15 is as follows: One wire 51 connects the bell magnet 52 with a source of current 53, another wire 54 connects the bell magnet 52 with the contact 55- adjacent to the armature 55, which armature is connected to the source of current lVhen the gong is at rest, the armature 55 is spaced from the contact 55 and in contact with the contact 55 at the end of a wire 56 which terminates in a contact 57 disposed adjacent to the armature 58 which is normally. spaced from such contact 57 and attracted by the relay R when the relay is energized. The armature 58 in turn-is connected by a wire 59 with one contact 60 of'a switch S. The contact 60 is in contact with the contact 61 of the switch when the alarm is set for operation, the contact 61 being connected by a wire 62 with the wire 51. In thewire 56," there is connected an electromagnet 63 disposed adjacent to the armature 55 and adapted to attract the same when it is energized. Thus when the switch is set so that the contacts 60 and 61 engage one another, and the relay R is deprived of its energy, so that the armature 58 contacts with the contact 57, the electromagnet 63 will be energized, attract the armature 55, and throw it into contact with the contact 55 of the wire 54, whereupon the circuit for the gong is energized. Thus obviously it will be seen that whenever the protected circuit connected to the guarded structure is broken, or the cover 18 removed, and the relay R thereby deenergized, the audible alarm will be energized.

In addition to the energization of the audible alarm 15, the system will thereby be set so as to prevent the unlocking of the casing 16. The locking means of the casing through the alined openings of said brackets 65 and '66 when said solenoid 67 is not energized, the core 68 being. connected to said solenoid 67 so that it cannot be completely detached from said solenoid. Thus, it will be seen that when the casing 16 is attached to the base member 14 and the solenoid is deprived of its energy, the core 68 cotiperating with the brackets 65 and 66'will lock said casing to said base'member and thus prevent access to the gong 15.

The winding of solenoid 67 is such that the current of the source of power 53 is not sufiicient for its energization and for this reason, it is found desirable to connect the solenoid 67 with a contact indicated at 73, with which contact 73 a public service main may be connected, the other terminal for such circuit being the contact 74 illustrated as disposed ad acent to the switch S. The solenoid 67 is connected to a wire 75 which terminates in a contact 77 disposed on the side of the armature 55 which is opposite to that side on which the contact 55 of the wire 54 is located, the contact 77 being adapted to contact with the armature when the gong is at rest. Disposed adjacent to the contact 61 there is a third contact 79 for the switch S adapted to contact with the contact 61, which contact can take place only when the contact 61 is out of engagement with the contact 60. The contact 79 is connected by the wire 80 with the contact 81 disposed on the same side of the armature 55 as the contact 55 of the wire 54 is disposed and adapted to contact with such armature when contact 55" is in contact therewith. 18 and furthermore would thereby destroy There is connected in the wire 80 an electromagnet 82 disposed adjacent to the armature.

ture 55 and on the same side as the contact 77. The Wire 80 is furthermore connected with the contact 74 already described as adapted to be connected" to a public service main.

The switch S is adapted to be operated by a lock 83, whereby when the bolt 8-1 is so thrown that the contact 61 will engage the contact 60, the system is set, so, that whenever the circuit of the relay R is disturbed. so that the relay R is deprived of energy, the magnet 63 will be energized, thereby attracting the armature 55 and forming a circuit to energize the audible alarm 15. Thereupon when the bolt 84 is so thrown that the contact 61 contacts with the contact 79, a circuit will be formed which will energize. the magnet 82 and retract the armature into contact with the contact 77 and the contact 55 of the wire 56, thusresetting the arma- VVhen the contacts 79 and 61 are in contact, and it is desired to remove the casing 16, it will only be necessary to connect the contacts 7 3 and 74 with the'public service mains, whereupon the solenoid 67 will be energized and withdraw the core 68 from the brackets 65 and 66, and it is then a simple matter to remove the casing 16.

. From the foregoing, it will be seen that if an unauthorized person should actually have come into the guarded structure without disturbing the protective circuit, before such person could get at the gong contained in the protected box B, he would immediately disrupt the circuit when he r moved the caslng the unlocking circuit of the inner casing 16.

In the accompanyingdrawing I have diagrammatically represented an embodiment of my invention, but I do not limit myself to the particular arrangement shown, as it will be evident to one skilled in the art, that my invention is susceptible of various forms and embodiments, and the particular descriptions hereinbefore contained ofthe typlcal embodiment shown in the annexed drawing are given for the clearer illustration of my invention. Many changes in construction and arrangement, and insertion or omission of parts may be made without departing from the spirit of my invention.

I claim:

1. The combination of an .inner casing, an outer casing, locking means for said inner casing, releasing means for said locking means, and disabling means for said releasing means controlled by said outer casing.

2. The combination of an inner casing, an outer casing, locking means for said inner casing, electromagnetic releasing means for saidlocking means, an energizing circuit for said releaslng means, a manually operated switch in said energizing circuit, an automatically operated switch in said energizing circuit, and means controlled by said outer casing for operating said automatically operated switch.

Signed at New York, in the county of New York and State of New York, this 8th day of February, 1917.

IMON BIHESS. 

